Pocketknife and the like



A. 1. TAN'NER.

POCKETKNIFE AND THE LIKE.

APPLxcAloN FILED mm1, 1920.

1,41 3,633. Patented Apr. 25, 1922.

ArENT oFFflcs. i

ARNOLD J'. TANNER, NO'RTiI-I HAVEN, CONNECTICUT.

POCKETKNIFE Anm .THE LIKE.

Appncaripn med February 11, 1920. serial 41\To .35'7,902.`

' dles of .certain other tools.`

' scales or'covering plates for the' handle.L

The purpose of the invention, amongst other things, is vto produce a durable 'and efficient article having the main parts thereof secured together, independently -of the AThe same vmeans however, which seourelsaid main parts, also sec'urefsaid covering plates, and to improve the appearance of theknife handle, and to strengthen-the construction, saidmeans are embedded and concealed in said covering plates. The invention furthermore, facilitates manufacture v`whereby cost of production materially reduced.

:in .carrying out an embodiment of the l "invention, asv applied to a folding or pocket'- knife, the latter vhas the tionrvcomposed preferably `of*'framing or cheek-plates, and the latter, with the cover,- ingplates, the blade or blades vand the spring or springs therefor, are mounted and held together. by the same rivets. The rivets employed herein, are provided with hollow, eX- panded or flared ends or heads protruding from the outer surface of the framing plates,

holdingV the,l parts of the knife firmly t0- gether andv presenting any under-cut or inwardly taperlng'head at various points for securing the` covering plates.

It is essential, withthe present invention, that the aforesaid covering plates should be composed of apsubstance capable of being vbroughtto a plastic state, or otherwise rendered pliable, for-when in vthat state, the plates are pressed onxthe knifel handle, comi pletely covering the rivet heads and forcing substance of which the plates is composed, to flow around and under the rivetheads. By this method and means, the vrivetv heads are concealed by being embedded in the plates vand when hardened, naturallyv or' by fany suitable process, said plates cannot then be removed without breaking the saine.v

Furthermore, during the operation Vof pressing the vcovering plates, or `artificially usual handle pori vFigures@ is a cross 2 2 0f Figure 1., g l,liigure 3 is a fragmentaryA longitudinal :Figure 5 `f Figure 7 plied to a tool ywherein, the vshank or tended 'tang of the tool hardening them, 'by a vulcanizingprocess specification of Letters Patent. Patllteid Apr. 25, 1922.A i

for eXample,fthey may be molded into the il' retpiiredl shape with `a pressure orf thereon.

The substance 4used'in the composition ofiA polish obtained any design may be pressedthe covering-plates may be lany suitable known kind, but desirably the substance should be workable at a comparatively: low temperature, for'instance as obtained with boiling water or wet steam, for it will be understood, theliixingof the coveringplates l 'is a-inal operatiomafter the handle and the linishedblades are assembled, consequently,

if the covering plates arerequired to be fixed v in-a great heat, a ,deteriorating effect to the knife and blades'might care is` not tvaken.0ther substances, a powdered form, plasticf or pliable in a Wet minedftemperature, may-be used, butl obresult, if particularl Y viou'sly, whatever 'composition is used,v the covering'plates must beimpervious to molsvture, 'when dried L or hardened." Anyk substance? employed rmust also be such that it will not softenv in `acomparatively lowtemperature,under`sayl() degrees, which with f reasonable use is a vfairly higliitemperature.

l*fSeveral embodiments ofthe invention, utilizing ltheimprovedl method.' of manufactureand the improved means'associated therewith, are more fully described hereinafter with"reference tothe accompynying drawings, wherein-l 'W v Figure. 1 is a side elevation'fof a pocketknife having a single folding blade;

section taken Online 3+?, of Figure le;

section taken on line Figureji isa crosssection 'taken Online lff of Figure l; l

is a sectional Vview illustrating one vform of flask or mold whereby the covfering plates are mol ded"andpressed on the n knife handle; i

FigurefG is' a detail, 'enlarged:sectionalSal view, illustratingfthe form' of rivet einp'loyed;v 1

illustrating a 'modified formof rivet;

is an enlarged vsectional viewk Figure 8 illustrates the inventionasfap-il 'eX- provides the 'base of the handle, and,

Figure 9 lis a cross section illustrating the 75 `state,o`r`when vsubjectedto heat of a detery signori the covering plates,

. covering plates on invention as applied (to a pocket-knife having two blades mounted on the saine rivet.

Referring to the drawings, the knife Vhandle is composed of the cheek or frame 'plates 1 in which the blades or blades 2 are pivota-llymounted on rivet 3 so as to close into the handle. The spring or springs e, for the blade or blades,- aresecured by rivets 5. r:Ehe latterfriyets, rivet 3 and rivet 6 in the butt end of thehandle, are alike and serve, besidesl tliei-r other functions, to hold the the outside of the plates 1. The rivets are all hollow or tubular and before insertion, in their original state, they may be constructed as shown in Figure 6, wherein one end is expanded or flared by spinning or otherwise, to form the inn wardly tapering, hollow head 8. After assembling the frame plates, blades, springs and the rivets, the upper end of the rivets is then likewise expanded or flared, or `should it be more convenient, both ends may b'e'expanded at the same time. The heads A8 are left to protrude from the outer surfaces ofthe plates 1 and around the tapering heads 'S an under-cut space 9 is formed. The assembled knife, to which the covering plates 7 are yto -be added, gis placed into arnold or former of a suitable press, such as shown for.example,-in Figure 5. .Herein the two members 10 and 11,*gu'ided by posts l2, are brought together when containing Vthe knife, with the ,material for foi-ming the covering plates, in ythe shape of'slabs 13..- Dies 14, carried by the press members,y may Vbe employed vto impress a deor the surface ofthe recesses 15, in the members 10 andjll,

4'may vbepolished whereby Vpolish is applied to the' covering plates. The corners 16 of the recesses 15 are desirably rounded so as j to give like form to the edges o-f the cover plates and `to cover the edges of the framing plates when required.

The moldor Vflask illustrated herein, may be one of a series in the same press, and dur- :in-g'the voperation of moldingV and fixing/the covering plates, lthe slabs 13, previously placed inftheir 4proper relative position to the plates 1, are subjected, preferably, to moist heat such A'as obtained with boiling water or wet steam, and when and While so rendered into aplasticor pliable state, the members 10 and 11, are pressed together, around the rivet completely `filling the under-cut heads, y

When the material of the coverspaces 9.

plates any other suitable process,rthe said plates will be Vtightly and permanently held in .place by the headsS, which are embedded inthe coveringplates and thus totally concealed.

ln Figure '8, the handle is applied by the improved method and withthe improved Vsecured in the hollow rivet of theknife.

but Vis bored out hasset or hardened by-this or rivet having the expanded, protruding head, butin this instance, the handle sections 17 and 18 completely cover the tang 19 of the tool. ln this form, an additional and obvious advantage as regards safety from electric shock, is obtained if the handle is coniposed of an electric insulating material.

Figure 9 illustrates the invention as applied to a knife having two blades mounted on the same rivet. ln such a construction, two springs arranged side by side, are re quired and also the division `plate 20 is employed. A. knife of this description, is considerably thicker than single bladed knife, therefore lto improve the appearance, amongst other thingsof the back ofthe ln some instances `where the knife handle is y of considerable length, it may be desirable to secure the, covering plates at intermediate points. A rivet through the handle would prevent operation vof vthe blades, therefore 8A is provided, by drawing out the metal Vof the plates 1, to form hollowprotuberances 2Q which are perforated and :flared VasV illustrated. in Figure Furthermore, when tively large and likely to receive rough us Yage, to` re-enforce the handle at the blade end, Vthe ends of the Iplates 1 are turned upwardly to form a guard 23. x

fr ring 24e, by means of whichthe'kni'fe can be fasten-edto a chain, may yconveniently'be `6 at thebutt end .ln Figure 7` a modified .form 'of rivet is shown, Awherein the rivet shank 25 issolid, l at the ends 26, which ends, in the operationof securing the handle plates 41 and the blades, 'are flared to form the hollow heads 8,'th`e edges of which are turned inwardly or crimped at 27soasf to constrict the opening of .thel cavity in thehollowfhe'ad.

ln'this construction, besides iilliiig the un der'- cu-t s'pacefwhich is not'quite so pronounced,

Vthe material of the co ering plates, "will be forced into the cavity of the head so as to fill the same, thusr forming anY integral tongue providing redectnal securing` nieans, with or without the under-cut spaces `9. @ne `advafntage herewith, is that thefcovern ing plates in; this instance, niay be th-inner than those-of the other'constructions above described. y Y

The chief advantages of a'knjife or. other article, constructed in accordance with the invention hereinbefore described,are that the rivets holding the khandle together'and securing the blades and springs, are'tirmly equivalent ofthe enpanded hollow head the knifey is lcomparaiio held in the metal plates l instead of in the comparatively softer Covering plates, as is the method generally adopted. Also the covering plates herein are firmly held by the embedded and concealed hollow expanded rivet heads much better than by means of the ordinary and exposed rivet heads heretofore used. Y

l. The method of manufacturing articles of the class described consisting` in building np the handle' portion thereof of sheet metal plates, uniting said plates by means. of rivets having hollow andprojecting ends, eXpand- `ing said ends to form heads so as to hold said plates together, and after said article is assembled, applying to the outer surfaces of said plates, a covering material under n v pressure and When in a plastic state, so asto mold said material on said plates and *em-1' bed said rivet heads in said material.`

2. fir-*method of manufacturing pocket or folding knives consisting in first assembling the parts of a knife comprising handle sec- .tions or plates covering scales or plates in Which said rivet heads are embedded 'and concealed.v

Signed at North Haven, in the county of New Haven and State of Connecticut, thisl k10th day "of February, Ad).l 1920. ,.1 l ARNOLDy J. TANNER, 

